Tension device.



E. J. LIPPS.

TENSIGN DEVICE.

APPHCATION HLED MAELZI, 191s.

Patented Dec. 19, 19l6.

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EMORY J. LIPPS, or FOUNTAIN HIL'L BOROUGH, PENNSYLVANIA.

TENSION DEVICE.

Specification of Letters Patent. t t 1916 Application filed March 21,1916. Serial No. 85,553.

To all whom it may concern:

Be it known that I, EMORY J. LIPPS, a citizen of the United States, residing in the borough of Fountain Hill, in the county of Lehigh and State of Pennsylvania, have invented certain new and useful Improvements in Tension Devices, of which the following is a specification.

This invention relates to tension devices, especially for controlling threads, filaments or the like which are delivered from supply Wound packages thereof in the direction of the length of the package windings, and it consists in certain novel means whereby an equable tension may be preserved on the material notwithstanding variations in the resistance opposed to, the delivery of the same from the packages, due, for instance, to difference in diameter of the package as between when the delivery starts and when it has progressed more or less (involving more or less disparity in the degrees of angularity of the material around the flange or head of the spool on which the package is wound) or to the actual point of unwinding being at times near and at others remote from the end of the package which adjoins the medium exerting the draft on the material.

I accomplish the purpose in hand, in a way permitting the material-to be withdrawn from the package at an exceedingly high rate of speed, by providing a-guide for the material which isfreely movable toward and from the package and is suitably retained in endwise relation thereto, being normally held, as by gravity, toward the package, with the result that as the resistance to the delivery of the material from the'package rises or falls from any'cause and tends to produce a corresponding increase 'or decrease in the tension of the material the guide will recede from or approach the package and by changing the degreeo'f angularity of the material producea resistance varying inversely to that of the primary resist ance. In practice I prefer to employ in connection with the guide a cone-shaped surface over which the material is drawn be tween the package and guide, which latter as it falls and rises causes the extent of contact of the material and said surface to increase and decrease, respectively; this, while diameter of the package at any time, the

proximity of the actual point of unwinding from the flange of the spool over which the materlal is drawn, and other conditions.

The drawing-shows my invention partly in side elevation and partly in section.

a designates a bobbin, spool or other support for a wound package I) having the coils thereof wound around andback and forth lengthwise of a common axis, the same being arranged inthe present instance non-rotatively on a pin 0 upstanding from the rail 01 of a doubling or winding machine, ande a pigtail or other fixed guide through which the threador filament is extended from the support a to a suitably rotated receiving spool or the like. (not shown). ,On the rail d is arranged an upstanding bracket f provided with avertical slot 9 in which is adjustably secured a pivot device h'afi'ording a fulcrum or pivot for the wire thread-guide i freely oscillatory on said pivot device in a vertical plane, its eyelet or thread-guiding portion a" being arranged substantially in the axis of the package 6. The thread-guide is provided with a threaded arm z' on which is screwed an adjusting nut Between the spool a and the thread-guide is preferably arranged a cone whose base adjoins the package and whose conical face is preferably convex. As thema-terial is drawn from the package the primaryresistance incident to its'delivery therefrom fluctuates from causes hereinbefore explained, resulting in the thread guide 2' rising and falling. This in itself contributes to a certain extent to the endinview, because the change in position of the thread guide, and consequent change in the angularity of the thread, represents a certain amount of compensation for the difference in degree of the primary resistance. But I prefer to employ the cone,

which, affords increasing or diminishing contact to the thread as the thread-guide falls and rises, andby its-frictional action pre serves the resistance to the thread-advancing medium much more smooth and regular in character than it would be without the cone, espe'ciallyif the cone be rounded or convex.

I do not wish to be limited to the exact construction of the; cone. In: the drawin it is shown as including a metal base la, 3

which affords a cap3'for the spool a, and has an upstandlng spindle 1,: and a .body m of suitable material fitted'onto a centr'al sleeve n which is slippedove'r;the spindle Z; rings of felt or some other suitable-material o which will oppose frictional resistance to the thread are inset in the conical face of the cone in the illustrated form thereof. In the present instance parts is and m are both non- 7 object and result of causing the movements of the thread guide, up or down, to be slow and smooth rather than quick, erky or vibratory.

' Adjustment of the device to vary the compensating action of the guide as circumalined with the package axis,.to guide the thread withdrawnfrom the package, and

means, adjustable substantially lengthwise stances require is accomplished by setting the pivot device it up or down in the slot and, if necessary, then shifting the nut j on the .arm 11.

Having thus fully described my invention, what I claim as new and desire to se cure by Letters Patent is 1. In combination, a support for a supply 'wound package havin the-coils thereof wound around and bac and forth lengthwise of a common axis, means, substantially alined with the package axis, to guide the thread withdrawn from the package, a tension guide for the thread having its guiding portion arranged between said means and the package and'endwise' of the latter and normally held toward but movable by the thread from the package, means to damp the movement of said'guide, and means in which said guide is confined to move toward and from the package.

2. In combination, a support for asupplywound package having the coils thereof wound around and back and forth lengthwise of a common axis, means, substantially alined with the package axis, to guide the thread withdrawn from the package, a pivoted tension guide for the thread having its guiding portion arranged between said means and the package and endwise of the latter and normally held toward but -mov able by the threadfrom the package, means to damp the movement of said guide, and

means in which said guide is pivotally movable toward and from the Package.

3. In'combination, a support for a'supply wound package having the coils thereof wound around and back and forth lengthwise of a common axis, means, substantially of said axis and including a tension guide 7 forthe thread having its guiding portion arranged between the first-named means andv the package'and endwise of the latter and normally held toward but movable by the thread from the package, for controlling the tension of the thread.

a." In combination, a support for a supply wound package having the coils thereof wound around and back and forth lengthwise of a common axis, means, substantially alined with the package axis, to guide the thread withdrawn from'the package, and means for controlling the tension of the thread including an oscillatory guide for the thread having its guiding portion. arranged between the first-named means and the package and endwise of the latter and normally held toward but movable by the thread from the package and adjustable means to control the oscillations of the guide. i

5. In combination, a support for a supply wound package, means, spaced from the package, to guide the thread withdrawn therefrom, a tension device normally held bearing against the thread between and spaced from the package and said means, and a dash-pot controlling the tension device. V

6. In combination, a support for a wound package having the coils thereof wound around and back and forth lengthwise of a common axis, and means, including a tension guide for the material movable toward and from and having its guiding. portion arranged endwise of the package and a dash-pot controller for the guide, for controlling the tension of the material.

7. In combination, a support fora supply wound-package having the coils thereof wound around and back and forth lengthwlse of a common axis, means, substantially alined with the package axis to guide'the thread withdrawn from the package, tension means including a* guide for the thread having its guiding portion arranged between said first-named means and the package and endwise ofand movable toward and from the latter and dash-pot controller for the tension means. r 8'. A thread tension 'mechanism including a thread-guide normally moving in one direction and adapted to be moved in the opposite direction by the thread and a dashpot controller for the guide'operatively connected therewith.- I Y 9. In combination, a support for a supply wound packagehaving the .coils' thereof woundaround and backand forth lengthwise ofa common .axis,-aw guide for the ma terial movable toward and from and havmg its gulding portion'arranged endwise of theipackage, 'means in which said guide is confinedto move toward and from the package, and'a cone. between the package and said guiding portion' 'and having its base adjoining theforme'r', the conical surface of the cone affording friction contactto the material. 7 '1.

10. In combination, a support for a supand a cone between the package and said p13 Wound package having the coils thereof guiding portion and having its base adjoin- 13 wound around and back and forth lengthing the former, the conical surface of the wise of a common axis, a guide for the macone being convex and afiording friction 5 terial movable toward and from and having contact to the material. its guiding portion arranged endwise of the In testimony whereof I aflix my signapackage, means in which said guide is con ture.

- EMORY JPLIPPS;

fined to move toward and from the package,

copies of this patent may be obtained for five cents each, ,by addressing the Commissioner of Patents,

Washington, D, 0. r 

